CYRF7936
2.4 GHz CyFi™ Transceiver
■ Battery Voltage Monitoring Circuitry
Features
■ Supports Coin-Cell Operated Applications
■ Operating Voltage from 1.8V to 3.6V
■ Operating Temperature from 0 to 70°C
■ Space Saving 40-pin QFN 6x6 mm Package
■ 2.4 GHz Direct Sequence Spread Spectrum (DSSS) Radio
Transceiver
■ Operates in the unlicensed worldwide Industrial, Scientific,
and Medical (ISM) band (2.400 GHz to 2.483 GHz)
■ 21 mA Operating Current (Transmit at –5 dBm)
■ Transmit Power Up to +4 dBm
Applications
■ Wireless Sensor Networks
■ Wireless Actuator Control
■ Home Automation
■ Receive Sensitivity up to –97 dBm
■ Sleep Current less than 1 µA
■ DSSS DataRates up to250 kbps, GFSK DataRate of1Mbps
■ Low External Component Count
■ White Goods
■ Commercial Building Automation
■ Automatic Meter Readers
■ Precision Agriculture
■ Remote Controls
■ Auto Transaction Sequencer (ATS) - no MCU intervention
■ Framing, Length, CRC16, and Auto ACK
■ Power Management Unit (PMU) for MCU
■ Fast Startup and Fast Channel Changes
■ Separate 16 byte Transmit and Receive FIFOs
■ Dynamic Data Rate Reception
■ Consumer Electronics
■ Personal Health and Fitness
■ Toys
■ Receive Signal Strength Indication (RSSI)
■ Serial Peripheral Interface (SPI) Control while in Sleep Mode
■ 4 MHz SPI Microcontroller Interface
Applications Support
See www.cypress.com for development tools, reference
designs, and application notes.
Logic Block Diagram
VCC
PACTL
VDD
VREG
L/D
VBAT
PMU
CyFi Radio Modem
Data
RFP
GFSK
VIO
Modulator
RFN
DSSS
Interface
and
Sequencer
IRQ
SS#
Baseband
& Framer
RFBIAS
SCK
MISO
MOSI
GFSK
Demodulator
SPI
RSSI
Xtal Osc
Synthesizer
RST
XOUT
GND
XTAL
Cypress Semiconductor Corporation
Document Number: 001-48013 Rev*B
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised March 11, 2009
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